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Preparation method of ultra-large zirconite ceramic material

A technology of ceramic materials and zircon, which is applied in the field of preparation of super-large zircon ceramic materials, can solve the problems of sintering shrinkage cracking and high pass rate, and achieves reduction of high temperature bending creep rate, high pass rate, and high pass rate. The effect of firing temperature

Inactive Publication Date: 2020-04-21
ZIBO GT INDAL CERAMICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method solves the problem of cracking caused by huge firing shrinkage during the firing process of super-large zircon ceramic materials, the qualified rate of the prepared products is high, and the bending in the length direction of large zircon ceramic materials can be significantly improved Creep rate and expansion rate of liquid crystal glass

Method used

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  • Preparation method of ultra-large zirconite ceramic material
  • Preparation method of ultra-large zirconite ceramic material
  • Preparation method of ultra-large zirconite ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] The raw material zircon powder used in the zircon support brick A includes the following components in mass percentage:

[0072] Al 2 o 3 0.15%, Fe 2 o 3 0.05%, CaO 0.02%, MgO 0.01%, K 2 O is 0.01%, Na 2 O is 0.01%, SiO 2 33.0%, TiO 2 0.12%, P 2 o 5 0.15%, ZrO 2 was 66.4%.

[0073] TiO 2 Powder median diameter≤1μm, chemical composition is TiO 2 More than 99wt%.

[0074] The above-mentioned raw materials are all commercially available commodities.

[0075] Zircon-based supporting brick A green body, including the following components in mass percentage:

[0076] Al 2 o 3 0.15%, Fe 2 o 3 0.05%, CaO 0.02%, MgO 0.01%, K 2 O is 0.01%, Na 2 O is 0.01%, SiO 2 32.8%, TiO 2 0.70%, P 2 o 5 0.15%, ZrO 2 was 66.1%.

[0077] Put zircon powder, zirconia balls and water into the ball mill according to the weight ratio of zirconia balls: zircon powder: water 2:2:1, then add titanium oxide powder less than 1 μm into the ball mill in proportion, add zircon The ...

Embodiment 2-12

[0094] The preparation methods of the zircon-based support brick A and the super-large zircon-based ceramic material B described in Examples 2-12 are the same as those in Example 1, and the mass ratios of raw materials used in Examples 2-7 and the preparation process See Table 1 for the parameters; see Table 2 for the ratio of raw materials used in Examples 8-12 and the parameters in the preparation process. The detection method is the same as that of Example 1, and the detection data of Examples 1-7 are shown in Table 3; the detection data of Examples 8-12 are shown in Table 4.

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Abstract

The invention belongs to the technical field of refractory materials, and particularly relates to a preparation method of an ultra-large zirconite ceramic material. A zirconite green body of which thesintering temperature is 10-110 DEG C lower than that of an ultra-large zirconite ceramic material is used as a supporting material, and the zirconite ceramic material is sintered under a reducing atmosphere condition, so that the sintering temperature of the zirconite material is increased, the sintering range is expanded, the problem of sintering cracking of an ultra-large zirconite ceramic material is solved, the bending creep rate and the foaming rate of the obtained product are remarkably improved, the service life of an overflow brick is prolonged, and the quality of liquid crystal glass is improved. The method is simple, feasible, scientific, reasonable and convenient for large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a preparation method of a super-large zircon ceramic material. Background technique [0002] In recent years, the size of TFT glass substrates used by TFT panel manufacturers has gradually increased. The wider the substrate glass, the longer the overflow bricks used in the overflow down-draw method. During the firing process of super-large zircon ceramic materials, the shrinkage rate of the green body in the length direction reaches more than 16%. The tensile strength of the oversized and heavy green body is far lower than the frictional resistance formed by its own weight. During the process, it is easy to cause the green body to be pulled apart until it breaks. As the size of the overflow brick increases to more than 3500mm, these problems become particularly prominent, and even qualified ceramic materials cannot be obtained by firing. In order to sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/66C04B35/16C04B35/64
CPCC04B35/481C04B35/49C04B35/64C04B35/66C04B2235/3201C04B2235/3206C04B2235/3208C04B2235/3217C04B2235/3272C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 李志军张晓峰李玉强张瑛李芳杨舒琪
Owner ZIBO GT INDAL CERAMICS
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